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Investigation of graphene-integrated tunable metamaterials in THz regime

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Abstract

A metallic fishnet metamaterial structure in sub-THz region is presented. The proposed structure is based on hexagonal resonators. Simulations have been performed by a 3D full-wave electromagnetic simulator and a negative refractive index has been observed at the frequency range between 0.55 and 0.70 THz with the help of the graphene layer. In order to observe the effect of the graphene layer, the metamaterial structure has been simulated and examined before and after graphene integration. Significant modification in the propagation properties has been observed after the graphene integration. Change in S-parameters with the size variation of hexagonal resonators and alteration in graphene thickness are also presented as a parametric study to show the tunability of the structure. Suitability of the metamaterial for sensor applications has been investigated. The proposed metamaterial structure is promising to be effectively used for tunability and sensor applications.

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Acknowledgements

The work reported here was carried out at Middle East Technical University-Northern Cyprus Campus (METU-NCC). It is supported by METU-NCC under grant numbers of BAP-FEN-15-D-3 and BAP-FEN-16-K-8.

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Authors and Affiliations

  1. Department of Electrical and Electronics Engineering, Middle East Technical University-Northern Cyprus Campus (METU-NCC), Kalkanlı, Guzelyurt, TRNC / Mersin 10, Turkey

    S Mahircan Demir, Yahya Yüksek & Cumali Sabah

  2. Kalkanli Technology Valley (KALTEV), Middle East Technical University-Northern Cyprus Campus (METU-NCC), Kalkanlı, Guzelyurt, TRNC / Mersin 10, Turkey

    Cumali Sabah

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  1. S Mahircan Demir
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  2. Yahya Yüksek
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  3. Cumali Sabah
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Correspondence to Cumali Sabah.

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Demir, S.M., Yüksek, Y. & Sabah, C. Investigation of graphene-integrated tunable metamaterials in THz regime. Pramana - J Phys 90, 65 (2018). https://doi.org/10.1007/s12043-018-1558-5

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  • DOI: https://doi.org/10.1007/s12043-018-1558-5

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